381402099 has 24 divisors (see below), whose sum is σ = 599071200. Its totient is φ = 232422912.

The previous prime is 381402097. The next prime is 381402101. The reversal of 381402099 is 990204183.

It is an interprime number because it is at equal distance from previous prime (381402097) and next prime (381402101).

It is not a de Polignac number, because 381402099 - 2¹ = 381402097 is a prime.

It is a super-2 number, since 2×381402099² = 290935122243211602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (381402097) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3774 + ... + 27875.

It is an arithmetic number, because the mean of its divisors is an integer number (24961300).

Almost surely, 2^381402099 is an apocalyptic number.

381402099 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

381402099 is a deficient number, since it is larger than the sum of its proper divisors (217669101).

381402099 is a wasteful number, since it uses less digits than its factorization.

381402099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31771 (or 31768 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 381402099 is about 19529.5186576628. The cubic root of 381402099 is about 725.2053949960.

The spelling of 381402099 in words is "three hundred eighty-one million, four hundred two thousand, ninety-nine".